Abstract
Molecular spin-photovoltaic device (MSP) has creatively integrated photovoltaic and spintronic functionalities, where output signal can be modulated even reaching fully spin polarized at room temperature by photo-generated voltage (Vph) as never before. Hence, to enhance Vph on a premise of effective spin transport is pivotal for improving MSP performance since it determines the capability for modulating spin signal. However, such capability for Vph to modulate spin signal is severely limited to the weak driving force of spin-photovoltaic interaction caused by single-component configuration of current MSP, and in this case, it can hardly be improved since MSP birth. Herein, an incomplete hetero-structure active layer is firstly employed to construct a novel-designed MSP, and a more efficient working mechanism has therefore been triggered and endows MSP with greater potential in the future. In such an MSP, the Vph has been enhanced by 15 times than in traditional single-component MSP at room temperature, which is far better than any previous reports. Moreover, desired properties of molecules for constructing ideal incomplete hetero-structure configuration and further optimizing above mechanism have been sketched theoritically, which will open a brand-new research chapter in both academic and practical aspects.
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